ADUs, or Accessory Dwelling Units, are secondary housing units located on the same property as a primary residence. They are also commonly known as granny flats, in-law units, or backyard cottages.

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     ADUs are typically smaller than the primary residence and can be detached or attached to the main house. They often have their own kitchen, bathroom, and sleeping quarters. ADUs can be used for a variety of purposes, such as housing aging family members, providing rental income, or serving as a home office or studio.

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     ADUs have become increasingly popular in recent years as a solution to housing shortages in urban areas. They are often easier and more cost-effective to build than new homes and provide more housing options within existing neighborhoods.

However, regulations for ADUs vary by location, and it is important to check with local authorities before building one. Some municipalities have strict zoning laws that prohibit ADUs, while others have relaxed rules and even offer incentives to encourage their construction.